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Tag Archive: penetration


Sidemount Technical Wreck Diving Subic Bay Philippines

Pony Cylinders and Redundant Air Sources for Wreck Diving by Andy Davis Recreational wreck divers often question whether they need to carry a redundant source of air when conducting specialist wreck diving activities.  Most agencies and instructors will generally recommend the use of redundant air sources to be a prudent measure for wreck divers.  However, […]

advanced wreck diving course subic bay

ADVANCED WRECK DIVING – COURSE NOTES by Andy Davis Disclaimer:   These notes accompany a professionally supervised advanced wreck diving workshop, aimed at developing specialist skills for qualified wreck divers.  This information is not a substitute for gaining proper experience under qualified direction.  Wreck penetration is a very hazardous scuba diving activity.  Divers should not […]

technical wreck penetration training course

Technical Wreck Penetration – A Question Of Experience by Andy Davis I often get asked how many dives should a technical wreck diver have before they undertake serious wreck penetration dives at depth. It’s  hard to answer, because it is a very individual question; which deserves more than a simple numerical answer. I can dive […]

technical-wreck-diving-philippines

How To Evaluate A Wreck Diving Course by Andy Davis In this article, I will be looking at what differentiates basic wreck diving courses – the good, the bad and the ugly. In particular, I want to examine specific wreck penetration issues, so that the reader may find some guidance in their selection of a […]

Advanced Sidemount Wreck Restrictions

Advanced Sidemount Wreck Diving: Passing Extreme Restrictions  Advanced sidemount diving techniques present a vast spectrum of new opportunities for wreck divers to safely explore previously unpenetrable sections of shipwrecks. The training for these activities is typically only available to fully qualified technical wreck (and/or full cave) sidemount divers. This reflects the high challenge involved with […]

technical-wreck-courses philippines

ANDI Wreck Diving Course – Penetration Dive Photos  Following the confined water skills training, the ANDI Level 2 ‘Techniques of Wreck Diving course gets real!  We conduct three actual wreck penetration dives of increasing complexity, during which students are able to apply the knowledge and techniques they have learned. Students apply proper reel-handling, guideline laying and […]

Defining Wreck Diving Restrictions by Andy Davis Very few diving agencies go into detail about wreck diving restrictions. Those that do, tend to limit their definition to either ‘not restricted’ or ‘restricted’. That definition hinges upon whether two divers could pass through simultaneously when sharing gas.  The intention of this is to prevent recreational divers […]

advanced wreck diving philippines

Relocating a Lost Guideline – Skills for Wreck Divers Technical Diving knowledge share by Andy Davis This article, by Jim Wyatt, was originally published in Underwater Spelology.  I have reproduced the article here, as the issue of relocating a lost guideline also demands the attention of wreck divers at all levels. In the event of a […]

Silt Out – Wreck Danger! This video, filmed by myself in Subic Bay, graphically shows the danger of silt out to wreck divers conducting penetration dives.   What looks like a nice safe and benign compartment, with plenty of light and an obvious exit (well within recreational wreck diving limits) turns into a potential death […]